Commit 6139ab41 authored Oct 20, 2022 by Charlene Liu Committed by Alex Deucher Nov 01, 2022

drm/amd/display: Update DML formula



[why]
This is to update SW DML implementation.

Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Ariel Bernstein <Eric.Bernstein@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 667be3ef

drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1052,7 +1052,8 @@ static bool CalculatePrefetchSchedule(
		else
		bytes_pp = myPipe->BytePerPixelY + myPipe->BytePerPixelC;
		/rev 99/
		prefetch_bw_pr = dml_min(1, bytes_pp * myPipe->PixelClock / (double) myPipe->DPPPerPlane);
		prefetch_bw_pr = bytes_pp * myPipe->PixelClock / (double) myPipe->DPPPerPlane;
		prefetch_bw_pr = dml_min(1, myPipe->VRatio) * prefetch_bw_pr;
		max_Tsw = dml_max(PrefetchSourceLinesY, PrefetchSourceLinesC) * LineTime;
		prefetch_sw_bytes = PrefetchSourceLinesY * swath_width_luma_ub * myPipe->BytePerPixelY + PrefetchSourceLinesC * swath_width_chroma_ub * myPipe->BytePerPixelC;
		prefetch_bw_oto = dml_max(bytes_pp * myPipe->PixelClock / myPipe->DPPPerPlane, prefetch_sw_bytes / (dml_max(PrefetchSourceLinesY, PrefetchSourceLinesC) * LineTime));

drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1074,7 +1074,8 @@ static bool CalculatePrefetchSchedule(
		else
		bytes_pp = myPipe->BytePerPixelY + myPipe->BytePerPixelC;
		/rev 99/
		prefetch_bw_pr = dml_min(1, bytes_pp * myPipe->PixelClock / (double) myPipe->DPPPerPlane);
		prefetch_bw_pr = bytes_pp * myPipe->PixelClock / (double) myPipe->DPPPerPlane;
		prefetch_bw_pr = dml_min(1, myPipe->VRatio) * prefetch_bw_pr;
		max_Tsw = dml_max(PrefetchSourceLinesY, PrefetchSourceLinesC) * LineTime;
		prefetch_sw_bytes = PrefetchSourceLinesY * swath_width_luma_ub * myPipe->BytePerPixelY + PrefetchSourceLinesC * swath_width_chroma_ub * myPipe->BytePerPixelC;
		prefetch_bw_oto = dml_max(bytes_pp * myPipe->PixelClock / myPipe->DPPPerPlane, prefetch_sw_bytes / (dml_max(PrefetchSourceLinesY, PrefetchSourceLinesC) * LineTime));